Thornaby-on-Tees · North Yorkshire
Roof structure repairs in Thornaby-on-Tees
If the top of a wall at your Thornaby-on-Tees property seems to lean out at the eaves, the roof may be spreading. Ties, collars and straps can usually hold it back, sometimes with an engineer’s design for the new load path.
Guide price from£285per rafter inc VAT

- Postcodes
- TS16, TS17, TS18
- Population
- about 22,000
- Area
- North Yorkshire
- Pricing region
- Yorkshire and the Humber
Is North Yorkshire prone to ground movement?
With roughly 22,000 people, Thornaby-on-Tees spans postcode districts TS16, TS17, TS18 in North Yorkshire. Nearby, we also cover Stockton-on-Tees (3 miles), Yarm (3 miles) and Middlesbrough (4 miles).
Parts of North Yorkshire have clay that can shrink near trees in dry spells. Parts of North Yorkshire lie on a former coalfield, so a coal mining search is worth checking if movement has no obvious cause. Housing stock in North Yorkshire: Stone cottages, Georgian and Victorian houses in York and Harrogate, and brick terraces on Teesside.
What should you budget for roof structure repairs in Thornaby-on-Tees?
The ranges below reflect typical Yorkshire and the Humber costs for roof structure repairs, including VAT. Scaffold, access and making good can push a job to the top of the range.
| Item | Guide price | Per |
|---|---|---|
| Repairing or doubling a rafter | £285 – £570 | per rafter |
| Purlin and strut strengthening | £1,150 – £2,850 | per roof |
| Tying in roof spread (straps and ties)est. | £760 – £2,400 | per roof |
Repair options we may recommend
Wall plate replacement
Rotten or crushed wall plates are replaced in short lengths while the rafters above are propped, and bedded on the wall in mortar. The plate is then strapped down to the masonry. It is often combined with rafter foot splices along the same run.
Best for: Rot along the eaves where rafters bear on the wall
Purlin and strut strengthening
Undersized purlins are strengthened with extra timber or replaced, and new struts are taken down to a load-bearing wall. Where there is no suitable wall, an engineer designs the load path. Temporary props hold the roof while members are changed.
Best for: Sagging slopes, slim purlins and struts removed from the loft
What to expect when we carry out roof structure repairs
Engineer’s design where needed
Where purlins, struts or ties must be redesigned, or the roof carries a heavier covering, an independent chartered structural engineer is appointed to specify the work. We can arrange this, and their design sets the sizes and fixings.
Written quote
You receive a no-obligation written quote listing each timber repair, any ties or straps, propping, scaffolding and making good. Once the repair is specified, the figure becomes a fixed price in writing.
Prop, strengthen and tie
The roof is propped where members are being changed, then rafters, purlins, struts and ties are repaired or added as specified. Coverings disturbed by the work are relaid, and building control inspects where the work needs it.
Is it time for roof structure repairs? Common signs
- Ridge line dipping in the middle when seen from the street
- Roof slope looking hollow or wavy between the ridge and the gutter
- Top of an outside wall leaning out at eaves level
Rules for roof structure repairs in England
In England, underpinning and other work that alters or strengthens a wall or foundation is building work under the Building Regulations (Part A, structure), so building control approves and inspects it. Like-for-like repairs often are not, and we tell you which applies before a price is agreed. Work to a party wall, or excavation close to a neighbour’s foundations, can also need a notice under the Party Wall etc. Act 1996.
Your roof structure repairs questions
How much should I budget for roof structure repairs in Thornaby-on-Tees?
Guide prices for roof structure repairs in Thornaby-on-Tees start from about £285 per rafter, including VAT, on Yorkshire and the Humber rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Can you survey a property in Thornaby-on-Tees?
Yes. We take enquiries from across Thornaby-on-Tees, including TS16, TS17, TS18, and from nearby places such as Stockton-on-Tees and Yarm. Send photos for a free initial view and we will tell you what happens next.
Why do houses in North Yorkshire crack?
North Yorkshire ranges from limestone dales and moors to clays and glacial deposits in the Vale of York, with the Selby coalfield in the south and ironstone workings in Cleveland. Teesside has areas of soft and made ground. Only an investigation can say why a particular building has moved.
Do I need a structural engineer for roof repairs?
For like-for-like repairs to a few rafters, often not. Where purlins, struts or ties are being redesigned, the covering is getting heavier or the walls are being pushed out, you usually do. Where the repair needs an engineer’s design or sign-off, an independent chartered structural engineer is appointed, and we can arrange this.
Can heavy concrete tiles damage a roof?
Yes, if the frame was designed for lighter slate or tiles and was not strengthened. The extra weight makes rafters and purlins sag and can bring on roof spread. Before re-roofing in a heavier material, have the structure checked and notify building control.
Related work in Thornaby-on-Tees
- Wall tie replacement
- Bowing wall repairs
- Structural surveys and crack monitoring
- Boundary and garden wall repairs
- Chimney stack repairs
Roof structure repairs near Thornaby-on-Tees
Every rafter, purlin and tie on the job in Thornaby-on-Tees is listed in the written quote, which becomes a fixed price in writing once the repair is specified.